Im not positive but i would say B! Sorry if this is wrong :(
I believe the answer is: <span>Economy-of-effort
</span><span>Economy-of-effort theory stated that people who tend to be the best in creating a certain product tend to be the people who had good understanding on the quality and characteristic of the material.
</span>This understanding make them able to determine the most efficient choice (both in cost and strategy) to produce that product.<span />
Answer:
Early humans in East Africa used hammerstones to strike stone cores and produce sharp flakes. For more than 2 million years, early humans used these tools to cut, pound, crush, and access new foods—including meat from large animal
Stone tool marks on this zebra bone look like those made during butchery experiments. Scientists have made experimental stone tools and used them to butcher modern animals. There is a strong similarity between the marks their tools made and the marks on fossil animal bones, indicating that early humans used stone tools to butcher animals by at least 2.6 million years ago.
Explanation: